Evidence-based Veterinary Medicine: Critical Appraisal
Hierarchy of Evidence
Evidence quality can be assessed based on source type. The Evidence Hierarchy (or sometimes seen as the Evidence Pyramid) depicts the relative statistical rigor for various types of studies. This reflects a relative authority in the various types of biomedical research. For instance, randomized controlled trials rank above expert opinion and acedotal experience.
Evaluating the Validity of a Therapy From the Medical Center Library at Duke University and the Health Science Library at the University of North Carolina Chapel Hill